Janina Zione Gavankar (/dʒəˈniːnə ɡəˈvɑːŋkər/; born November 29, 1980) is an American actress and musician. She is trained as a pianist, vocalist, and orchestral percussionist, and she majored in theatre at the University of Illinois Chicago. Her roles include Eva "Papi" Torres on Showtime's The L Word, Shiva on The League, Leigh Turner on The Gates, Luna Garza on HBO's True Blood, McKenna Hall on The CW's Arrow, and Diana Thomas on FOX's Sleepy Hollow. In marketing, she also played "Ms. Dewey", a personified search engine and virtual assistant for Microsoft.